Fe3+/Nb5+ co-doping effects on the properties of Aurivillius Bi4Ti3O12 ceramics

Correlation of Structural, Microstructural, Dielectric, and Impedance Properties in Nd Doping on Bi4Ti2FeO12 Multiferroic Aurivillius Ceramic

“…As per earlier reports, only 18 sharp characteristics of Raman phonon modes were experimentally observed in pure Bi 4 Ti 3 O 12 ceramics. [ 23,33 ] In this present work, Nd‐doped Bi 4 Ti 2 FeO 12 Aurivillius ceramics might have additional modes due to FeO 6 octahedra, as shown in Figure 3.…”

“…As per earlier reports, only 18 sharp characteristics of Raman phonon modes were experimentally observed in pure Bi 4 Ti 3 O 12 ceramics. [23,33] In this present work, Nd-doped Bi 4 Ti 2 FeO 12 Aurivillius ceramics might have additional modes due to FeO 6 octahedra, as shown in Figure 3. Experimentally, we noticed ten sharp Raman active modes (which were deconvoluted as shown in Figure 3) at 66, 122, 232, 264, 338, 495, 551, 570, 689, 712, and 856 cm À1 and are well-matched with the earlier reports.…”

Novel Aurivillius Bi4Ti3−2xNbxFexO12 phases with increasing magnetic-cation fraction until percolation: a novel approach for room temperature multiferroism

“…As already pointed out, Aurivillius single-phase nanocrystalline phases were obtained for all cases, including x = 0.75 and 1 that had not been synthesized by high temperature solid state reactions. 32 No significant differences in the mixture evolution during mechanical treatment or in the required milling times for completing the synthesis were found among samples, and 24 h was established as a suitable time to stop mechanical treatment for all cases. Phase evolution during milling is illustrated in Fig.…”

“…31 A recent paper explored the system Bi 4 Ti 3À2x -Nb x Fe x O 12 and carried out its synthesis and ceramic processing by conventional means. 32 Aurivillius single phase materials could only be obtained up to x = 0.5, for which ferroelectricity persisted, yet the magnetic order did not develop. 32 The issue was probably the fraction of magnetic species that was only 1/6 in this case.…”

“…32 Aurivillius single phase materials could only be obtained up to x = 0.5, for which ferroelectricity persisted, yet the magnetic order did not develop. 32 The issue was probably the fraction of magnetic species that was only 1/6 in this case.…”